package top.linesoft.biptstudy;




import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;

class User implements java.io.Serializable {
    int id;
    String name;
    String gender;

    User(int id, String name, String gender) {
        this.id = id;
        this.name = name;
        this.gender = gender;
    }
}









